Fixing bankroll graph

app/src/main/java/net/pokeranalytics/android/calculus/bankroll/BankrollReport.kt

@@ -190,8 +190,10 @@ class BankrollReport(var setup: BankrollReportSetup) : RowRepresentable {
 
 		this.evolutionItems.sortBy { it.date }
 
+		var total = 0.0
 		this.evolutionItems.forEach {
-			val point = BRGraphPoint(it.amount, it.date, it)
+			total += it.amount
+			val point = BRGraphPoint(total, it.date, it)
 			this.evolutionPoints.add(point)
 		}